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SPA-2318

2150 MHz 1 Watt Power Amplifier with Active Bias

Stanford Microdevices 

Pin #

1

2

3

4

5, 6, 7, 8

EPAD

PPrreelliimmiinnaarryy

SPA-2318 2150 MHz 1 Watt Power Amp

Function

VC1

Vbias

RF In

VPC2

RF Out/VC2

Gnd

Description

VC1 is the supply voltage for the first stage transistor. The configuration as

shown on application schematic is required for optimum RF performance.

Vbias is the bias control pin for the active bias network. Recommended

configuration is shown in the Application Schematic.

RF input pin. This pin requires the use of an external DC blocking capacitor as

shown in the Application Schematic.

VPC2 is the bias control pin for the active bias network for the second stage.

The recommended configuration is shown in the Application Schematic.

RF output and bias pin. Bias should be supplied to this pin through an external

RF choke. Because DC biasing is present on this pin, a DC blocking capacitor

should be used in most applications (see application schematic). The supply

side of the bias network should be well bypassed. An output matching network is

necessary for optimum performance.

Exposed area on the bottom side of the package needs to be soldered to the

ground plane of the board for optimum thermal and RF performance. Several

vias should be located under the EPAD as shown in the recommended land

pattern (page 6).

Simplified Device Schematic

2

2

1

4

ACTIVE BIAS

NETW ORK

5-8

ACTIVE BIAS

NETW ORK

3

Absolute Maximum Ratings

Operation of this device above any one of these

parameters may cause permanent damage.

Bias Conditions should also satisfy the following

expression: IDVD (max) < (TJ - TL)/Rth,j-l

Caution: ESD sensitive

Appropriate precautions in handling, packaging and

testing devices must be observed.

Parameter

Supply Current (VC1)

Supply Current (VC2)

Device Voltage (VD)

Power Dissipation

Operating Lead Temperature (TL)

RF Input Power

Storage Temperature Range

Operating Junction Temperature (TJ)

Value

150

750

6.0

4.0

-40 to +85

+40

-40 to +150

+150

Unit

mA

mA

V

W

ºC

mW

ºC

ºC

726 Palomar Ave., Sunnyvale, CA 94085

Phone: (800) SMI-MMIC

5

http://www.stanfordmicro.com

EDS-101432 Rev B

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